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15 thoughts on “Air Quality Devices – Comparison 2017 Q2”

I wonder if someday you could include the type of sensor that is used. The technology behind the sensor (metal oxide, electrochemical, particle sensor…) would be an interesting category to help our understanding of these devices. You have touched on this in your comments and I agree that some devices may not clearly state what sensors they are using.

* We offer 2 models, one with a humidity sensor ($199), and one without ($149). Your chart says “No” for humidity, which is fine if that’s the model you tested, but then the price should be listed as $149 and not $200. Alternatively, change “Humidity” to “Yes” and list the price as $199.

Hello,
first of all, thanks for your work.
In my case all comes down to accuracy. By accuracy I don’t mean the exact absolute number of particles or CO2, but at least an high correlation with the real data ( the values can be higher or lower but the error remains constant and with same trend of real data ). The drift of the sensors over time is also a concern for me.
¿What’s the point if they don’t measure the real data?
In the end the only way to be sure about this is to buy another reliable particle meter like Dylos and compare values… If you could measure the accuracy somewhat it could be awesome.
For example Laser Egg and AirVisual were tested by smartair and they were very accurate.

Hi Asier, thank you for your message. Indeed accuracy is important and durability as well. AirVisual has a great CO2 sensor I use it myself and I have compared it with others too. Now about PM sensors, they are vulnerable to dust and they are hard to maintain. You have mentioned Dylos. It isn’t the best and it isn’t the most accurate device. Although the company has been on the market for quite some time now but they haven’t update their product recently. Some companies have used cheap PM sensors but believe me they have learnt their lesson.